Arabidopsis thaliana

Ara­bidop­sis thaliana is a small flow­er­ing plant of mus­tard fam­i­ly, bras­si­caceae (Cru­cifer­ae). It is dis­trib­ut­ed through­out the world and was first report­ed in the six­teen­th cen­tu­ry by Johan­nes Thal. It has been used for over fifty years to study plant muta­tions and for clas­si­cal genet­ic analy­sis. It is now being used as a mod­el organ­ism to study dif­fer­ent aspects of plant biol­o­gy.
A. thaliana is a diploid plant with 2n = 10 chro­mo­somes. It became the first plant genome to be ful­ly sequenced based on the fact that it has a (1) small genome of ~120 Mb with a sim­ple struc­ture hav­ing few repeat­ed sequences (2) short gen­er­a­tion time of six weeks from seed ger­mi­na­tion to seed set, and (3) pro­duces large num­ber of seeds. The sequenc­ing was done by an inter­na­tion­al col­lab­o­ra­tion col­lec­tive­ly ter­med the Ara­bidop­sis Genome Ini­tia­tive (AGI). Though of no eco­nom­ic impor­tance, it is an invalu­able resource to agri­cul­tur­al­ly impor­tant crops, par­tic­u­lar­ly to mem­bers of the same fam­i­ly, which includes canola, an impor­tant source of veg­etable oil. EST/mRNA align­ments to the Genome are avail­able for ftp down­load. They are in the Splign for­mat.

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